.TH std::_Exit 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::_Exit \- std::_Exit

.SH Synopsis
   Defined in header <cstdlib>
   [[noreturn]] void _Exit( int exit_code ) noexcept;  \fI(since C++11)\fP

   Causes normal program termination to occur without completely cleaning the
   resources.

   Destructors of variables with automatic, thread local and static storage durations
   are not called. Functions passed to std::at_quick_exit() or std::atexit() are not
   called. Whether open resources such as files are closed is implementation defined.

   If exit_code is 0 or EXIT_SUCCESS, an implementation-defined status indicating
   successful termination is returned to the host environment. If exit_code is
   EXIT_FAILURE, an implementation-defined status, indicating unsuccessful termination,
   is returned. In other cases implementation-defined status value is returned.

.SH Parameters

   exit_code - exit status of the program

.SH Return value

   \fI(none)\fP

.SH Example


// Run this code

 #include <iostream>

 class Static
 {
 public:
     ~Static()
     {
         std::cout << "Static dtor\\n";
     }
 };

 class Local
 {
 public:
     ~Local()
     {
         std::cout << "Local dtor\\n";
     }
 };

 Static static_variable; // dtor of this object will *not* be called

 void atexit_handler()
 {
     std::cout << "atexit handler\\n";
 }

 int main()
 {
     Local local_variable; // dtor of this object will *not* be called

     // handler will *not* be called
     const int result = std::atexit(atexit_handler);

     if (result != 0)
     {
         std::cerr << "atexit registration failed\\n";
         return EXIT_FAILURE;
     }

     std::cout << "test" << std::endl; // flush from std::endl
         // needs to be here, otherwise nothing will be printed
     std::_Exit(EXIT_FAILURE);
 }

.SH Output:

 test

.SH See also

   abort causes abnormal program termination (without cleaning up)
         \fI(function)\fP
   exit  causes normal program termination with cleaning up
         \fI(function)\fP
   C documentation for
   _Exit
